Improvement in sewing-machines



E. A. eoonns &' E. L. MILLER. SEWING MACHINE.

No.'2 4,863. Patented July 26, 1859.

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and operation of the machine.

UNITED. STATES PATENT OFFICE.

n. A. eoonns AND E. L. MILLER, or PHILADELPHIA, PEnNsYLvAN'IA.

IMPROVEMENT IN SEWING-MACHINESJ Specification forming part of Letters Patent No. 24,863., dated July 26,1859.

To aZZ whom it may concern: Be it known that we, E. A. Goonns and E. L. MILLER, of the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Sewing-Machines; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, forming part of this specification, in which Figure 1 is a side View of a sewing-machine having omitted all the parts not necessary to illustrate our invention. Fig. 2 is a frontview of the same. Figs. 3, 4., and 5 are detail views, which will be hereinafter explained.

Similar letters of reference indicate corre sponding parts in the several figures.

'Our invention relates to the formation of a stitch of novel character suitable for working button-holes and eyelet -holes,' overseaming, and for other'kinds of work in which it is necessary or desirable for the stitches to pass over an edge.

, It consists in a certain combination of mechanical devices for making suchstitch.

To enable'others to make our new stitch and to make and use the machine for producing it, we will proceed to describe the construction A is the-bed-plate, B the work-plate, Othe stationary arm, D the pressure pad, E the needle-arm, and n the ordinary needle, all constructed and arranged in a well known manner.

F is a lever working 011 a fixed stud, a, that is secured firmly to the stationary arm 0, and having attached to one end a hooked loopingneedle, I), the longitudinal form of which is that of an are described from the center of the stud a. The said lever F is connected by a link, 0, with one end of alever, G, which works on a fixed fulcrum, d, secured in the .arm 0. The opposite end of the said lever G carries a pin, e, which enters aslot, f, in the end of the needle-arm; and so causes the needle-arm, as it operates in the usual manner, to give motion to the lever G, which, operating through the link 0 on the lever F, causes the hooked looping-needle b to descend and ascend simultaneously with the eye-pointed thread-needle n, the said needle I) passing through an opena passes through, and its point and hook passing close by or in 'contactwith theneedle or, just above the eye thereof, while the latter is protruded through the work-platc nearly to its greatest distance. The above movement will be understood .by a comparison of Figs. 1 and 4, in the former of which the needles have only just commenced their descent, and in the latter of which they are represented as having completed it.

H is a small standard secured to the stud a, having pivoted to its upper part by a pin, 9, an arm, I, at thelower end of which is a hook, IL. The said arm I and hook h are arranged to swing above the work-plate B in planes parallel'to those in which the hooked needle 1) .moves, and so that the said hook it will pass close to the needle 01 on the opposite side thereof to the hooked needle I). To the upper part "of the arm I there is attached a pin, 6, which enters a slot, j, ina cam-plate, J, that is secured to the needle-arm, and a slot, k, is provided'in the standard H for the pin 13 to work through. The action which-this slotj has upon the pin as the needle-bar Emoves up and down causes the arm Ito swing back and forth and carry the hook. past the needle 1:, making the said hook advancequickly as the needle or completes its ascent and retire quickly v as the said needle commences its'descent', and

keeping it nearly stationary during the greater portion of the operation of'the needles n b. The operation of this hook may beundelstood by a comparison of Figs. 1 and 5, the perspective View, Fig. 5, showing it adv'anced and the needles in the highest position, and Fig. 1 showing it drawn back again after the needles have descended but a short distance.

L is a stationary pointed tongue, of steel or other metal, arranged close under the workplate in such relation to the needles n andv b that they will both pass near its point, but on opposite sides thereof. It is desirable that this tongue Lshouldbe elastic laterally to prevent its interfering with the operation of the needles b n, and for that reason, as well as for greater convenience of application, we propose to give it the curved form shown in the horizontal view, Fig. 3; but the form of any other part than its point is of comparatively little importance. The thread of the needle n is shown in the several figures in red color.

ing in the work-plate near where the needle Thesewing operation is performed in the fol- I. I i i lowing. manner with a single thread, which comes to and through the eye of the needle 10 in'the same manper as the needle of other sewing-machines: The cloth or other material towith the edge of the button or eyelet hole or other edge to be sewed over at a suitable distanee from the path of theperforating-needle in, and so that the hooked need-1ebpasses by the edge of the hole or seam and'passes the {protruded portion of the needle'n below the work plate. As the needle 07, returns and leaves its thread below the material -slackened in the form of a loop on the side next the needle b, the latter needle returns also, and its hook catches theloop and draws it around the 'point of the tongue L, which holds it, asshown inFig. 2, v so as to prevent its slipping out of the said hook. The needle b draws up the loop through the hole or past .the'edge of v the material while the needle n andithread are drawn up from the cloth, and the hook h addances to the position. shown in Fig, 5 as the needles complete their u'pward stroke, that it may catch and retire with one side of the loop. as the needles commence todescend again, andthus .to spread it, as shown in Fig. 1, so that the needle nmay pass through it and carrythe. next loop throughit. The tongue L is so formed that the loop slips off it at the neces- ,sarystage in the operation. Every loop is operated upon in succession-in the same manner bythe hooked needle 6 and hookhthat' is to say, is drawn up over the edge of the material to the side where it entered, and on that taken off as required. 1 7 Two threads may be used without changing the'construction of any of the" parts above specified, except that of the hooked needle I), ,which will require to have a second hook to side has its suecessor passed through it. The

stitch is shown in Fig. 5'as being worked on) part'of a button-hole, the edge vof which is repv resented by blue outlines. be operated upon is placed on thework-plate, v

with our improved stitch-making apparatu -may be of any known kind.

The feed-motion employedv in connection The" apparatus may be adapted to any or most ofzthe machines in use, and piit'on'and catch the second thread, which should be so conducted froma spool or bobbin below the work-plate as to be caught by the said hook and drawn in the form of a loop through the loop of the thread from the needle Maud drawn with the latter loop over the edge of the material, and to he caught and'. spread by the hook h along with the latter loop, that the nee dle n may pass through it also.

What we claim asour invention, and desire to secure by Letters Patent, is-- The combination-of the needles-n and b, the hook h, and the tongue L, the whole applied,

arranged, and operating substantially as herein described.

, A, eoonns E. L. MILLER.

Witnesses: f I I I JACOB HERITAGE, (JHAnLEs FRANK 'CRIPPs. 

